1.8 kg of nitrogen fills a piston chamber with a volume of 0.038 m3 at 560 kpa gauge. the piston is then moved so that the volume doubles. the chamber is allowed to sit until it again reaches room temperature of 20°c. what is the final pressure in the chamber?

Ajournal bearing has a journal diameter of 3.250 in with a unilateral tolerance of 20.003 in. the bushing bore has a diameter of 3.256 in and a unilateral tolerance of 0.004 in. the bushing is 2.8 in long and supports a 700-lbf load. the journal speed is 900 rev/min. find the minimum oil film thickness and the maximum film pressure for both sae 20 and sae 20w-30 lubricants, for the tightest assembly if the operating film temperature is 160°f. a computer code is appropriate for solving this problem.